vice president joe biden in tokyo. he says asia pacific regions are in a period of rising tensiones and a risk of miscalculation, but the u.s. is fully committed to rebalancing in the asia pacific region. closer cooperation between japan and south korea, as well. this is the british prime minister david cameron is currently touring around china. >>> the national transportation safety board says the new york commuter train that derailed on sunday was traveling at 82 miles per hour when it entered a curve where the speed limit was just 30 miles per hour. four people were killed and more than 60 injured in the accident. the ntsb says the train's brakes were working properly, but were applied only seconds before the crash. >>> a new tank by thailand's government is diffusing tensions in bangkok. allowing protesters inside. but even as tear gas and rubber bullet ves givs have given away calmer demonstrations, the protests have continued. >>> and the ukrainian president has left the country to go ahead with planned four-day